Path Traversal in Makafeli N8n-Workflow-Builder
CVE-2026-15521
A vulnerability was identified in makafeli n8n-workflow-builder up to 0.11.0. Affected is an unknown function of the file build/server.cjs of the component update_node_from_file. The manipulation of the argument filePath leads to path traversal. An attack has to be approached locally. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Makafeli N8n-Workflow-Builder — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/vuln/377850 (technical-description, vdb-entry)
- vuldb.com/vuln/377850/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-15521 (third-party-advisory)
- vuldb.com/submit/854522 (third-party-advisory)
- github.com/makafeli/n8n-workflow-builder/issues/28 (issue-tracking, exploit)
- github.com/makafeli/n8n-workflow-builder/ (product)
Frequently asked questions
- What is CVE-2026-15521?
- CVE-2026-15521 is a medium-severity vulnerability in Makafeli N8n-Workflow-Builder, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-07-13.
- How severe is CVE-2026-15521?
- Medium severity. CVSS v3 base score is 5.3 out of 10.